.well-accueil {
    min-height: 20px;
    padding: 10px;
    border-radius: 10px;
    text-align:center;
    margin-bottom: 20px;
    color:#573D7D;
    background-color: #F2F2F2;
    border: 1px solid #573D7D;
    border-radius: 4px;
    -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, .05);
    box-shadow: inset 0 1px 1px rgba(0, 0, 0, .05);
}

.well-presentation{
    text-align : center;
}

#logo-accueil{
    width:200px;
    margin:0 auto;
}

.img-accueil{
    width:100px;
    margin:0 auto;
}

.barre-accueil{
    border-top:2px solid #e3e3e3;
    width:300px;
    margin:20px auto;
}